Sunday, September 14th, 2014 - 7:00 pm 
(Arizona time)

meltdownPhoto at left shows the situation after a battery discharge
test at 300 amps was terminated on a 1530 AH IBE battery string when one post melted.

During the discharge test all cell voltages are logged. The sum of the cell voltages was 2.73
volts lower than the 48-volt string voltage. This is an average of 118 mv per inter-cell
connection, 5-10 mv is the normal range in a properly connected battery bank.

Lesson learned: Bolts are not for current carrying.
Bolts are to hold lugs, etc. in tight contact with electrical terminals.

{slimbox images/articles/design/meltdown2.jpg,images/articles/design/meltdown2_sm.jpg,Meltdown} {slimbox images/articles/design/meltdown3.jpg,images/articles/design/meltdown3_sm.jpg,Meltdown}

View with bolt removed. Shows where
battery lead terminal was melted.

Detail of the low-cost battery connections.
banner-donation

AzSC Blog

Red and Blue Equals Green

George P. Shultz served as U.S. Secretary of State, Treasury and Labor under two GOP Presidents. Today, Shultz is co-chair of Stanford University’s Hoover Institution task force on energy policy.

Continue Reading...

--- Find us on ---
Facebook Twitter Meetup Group Youtube Wikipedia Linked In
Why not Like Us on Facebook?
Or Follow us on Twitter?

Calendar

September 2014
S M T W T F S
31 1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 1 2 3 4

Login or Register

We thank the following AzSC Sponsors:
ASEA Logo AriSEIA Logo PSM Logo